1225996 has 12 divisors (see below), whose sum is σ = 2186352. Its totient is φ = 601328.

The previous prime is 1225981. The next prime is 1225997. The reversal of 1225996 is 6995221.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680 + ... + 3103.

It is an arithmetic number, because the mean of its divisors is an integer number (182196).

2^1225996 is an apocalyptic number.

It is an amenable number.

1225996 is a deficient number, since it is larger than the sum of its proper divisors (960356).

1225996 is a wasteful number, since it uses less digits than its factorization.

1225996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840 (or 5838 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 1225996 is about 1107.2470365731. The cubic root of 1225996 is about 107.0277390451.

The spelling of 1225996 in words is "one million, two hundred twenty-five thousand, nine hundred ninety-six".